Tested in chrome # 58.0.3029.81 and canary #60.0.3081.0 on win 10.0 & 7 and not able to reproduce the issue.Please find the screen shots for your reference.

@Reporter: Could you please let me know if i have missed anything and if possible,Please provide us extension URL and screen cast of the issue which would help us to triage the issue further.

Thanks in Advance.

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Did you try with 2 monitors who have different windows scaling (see screenshot attached)? I tested on a second machine, same problems. Doesn't apprear with extensions who use chrome menu but extensions that have their own menu style such as "Fireshot", "LastPass", "AdBlockPlus", "Google Tag Assistant" etc.

Works fine with Adobe Acrobat even though this plugin doesn't use standard menu. 

Can't do Screencast unfortunately, mouse pointer isn't recorded at the right place as well - which looks like a windows problem then. 

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Thank you for providing more feedback. Adding requester "rbasuvula@chromium.org" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I am using a Laptop with LCD screen resolution of 1920x1080 px. It is scaled in Windows 10 settings to 125 % because it is 15,6 Inches small and otherwise I couldn't read a lot of stuff. The resolution stays at 1920x1080 px, I didn't change that in Windows!

My second external monitor has 1920x1080 px resolution as well. Because it is a 27 Inch size, I don't have to scale up windows in order to see things properly. Windows scaling stays at 100 %, Windows resolutions stays as well at 1920x1080 px. 

The problem doesn't affect Chrome itself, native Chrome menu, or Tab content (websites, Chromes setting sites or Extensions setting sites).  It only applies to Extension menus which use there own Menu theme. Extensions using the Chrome Menu theme/appearance are not affected.

The bug is affecting the use of this extension for example: 
https://chrome.google.com/webstore/detail/share-to-classroom/adokjfanaflbkibffcbhihgihpgijcei

Please also see attached screenshot. 

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Small list of extensions that I tried on several machines so far:


AFFECTED
https://chrome.google.com/webstore/detail/adblock-plus/cfhdojbkjhnklbpkdaibdccddilifddb
https://chrome.google.com/webstore/detail/take-webpage-screenshots/mcbpblocgmgfnpjjppndjkmgjaogfceg
https://chrome.google.com/webstore/detail/tag-assistant-by-google/kejbdjndbnbjgmefkgdddjlbokphdefk
https://chrome.google.com/webstore/detail/lastpass-free-password-ma/hdokiejnpimakedhajhdlcegeplioahd
https://chrome.google.com/webstore/detail/share-to-classroom/adokjfanaflbkibffcbhihgihpgijcei // by Google
https://chrome.google.com/webstore/detail/page-analytics-by-google/fnbdnhhicmebfgdgglcdacdapkcihcoh // by Google
https://chrome.google.com/webstore/detail/google-translate/aapbdbdomjkkjkaonfhkkikfgjllcleb // by Google
https://chrome.google.com/webstore/detail/bookmark-manager/gmlllbghnfkpflemihljekbapjopfjik // by Google
https://chrome.google.com/webstore/detail/google-publisher-toolbar/omioeahgfecgfpfldejlnideemfidnkc // by Google


NOT AFFECTED
https://chrome.google.com/webstore/detail/wappalyzer/gppongmhjkpfnbhagpmjfkannfbllamg (uses chrome style menu)
https://chrome.google.com/webstore/detail/google-keep-chrome-extens/lpcaedmchfhocbbapmcbpinfpgnhiddi (uses chrome style menu) // by Google
https://chrome.google.com/webstore/detail/google-scholar-button/ldipcbpaocekfooobnbcddclnhejkcpn // by Google - it looks like they use their own styled menu though, what are they doing right?
https://chrome.google.com/webstore/detail/earth-view-from-google-ea/bhloflhklmhfpedakmangadcdofhnnoh (uses chrome style menu) // by Google

Google Classroom could not fix the problem:
https://issuetracker.google.com/issues/64551072

Please provide us with an update on the case. Thank you very much. 

- I can reproduce this issue on my laptop with external monitor set to 125% scaling: https://drive.google.com/open?id=0By9xEkAUmm_cQTFkOE9DQmtQY1E
laptop screen is on 100% https://drive.google.com/open?id=0By9xEkAUmm_cUnZ5ajJqVldod0E
- The only difference is that mouse cursor goes "ahead" the actual selection. Here is the video of the behavior:https://drive.google.com/open?id=0By9xEkAUmm_cZURyWEh4eUM4Z2s

OS: Windows 10 Pro 1511
Chrome Version: 60.0.3112.113 (x64)

PII protected debug log: https://drive.google.com/open?id=0By9xEkAUmm_celRrb0w0bWpNckE


govind@ - could you please help with triage?

     

+ligimole@ to triage

Any news on this issue? We have more customers reporting similar behavior

Hello, We'd like to follow up on this, please. Thank you.

Hi ligimole@, could you please triage this bug?

Thanks for the steps in #10.

Narayana, could you please find someone to triage this issue.

Tested on reported latest Stable #62.0.3202.75, Dev #63.0.3239.18 on Windows 10 and able to reproduce the issue. However, issue is not reproduced on latest Canary.

Using the reverse bisect providing the bisect results,

Good Build: 64.0.3243.0  (Revision: 509636).
Bad Build: 64.0.3242.0  (Revision: 509211).

You are probably looking for a change made after 509520 (known good), but no later than 509521 (first known bad).

CHANGELOG URL:
https://chromium.googlesource.com/chromium/src/+log/b2bc703d087081f2e0aba8d18871aa10d53511da..891446cb0a8f35876d2e1467e32c0e37830b876f
https://chromium.googlesource.com/chromium/src/+/891446cb0a8f35876d2e1467e32c0e37830b876f

Review ON: https://chromium-review.googlesource.com/c/chromium/src/+/721851

@fsamuel--  Could you please look into the issue, and merge the changes made to Dev, Beta and Stable.

Note: Forward Bisect Details:

Good Build: 54.0.2826.0  (Revision: 411209).
Bad Build: 54.0.2827.0  (Revision: 411497).

Thanks.

As per the above comment, the issue is fixed in canary. vkasatkin@ could you please try in canary and provide us with the latest update.

One of our customers has confirmed that this issue is fixed in Canary.

 Issue 794005  has been merged into this issue.

I am seeing this problem on Version 66.0.3359.170 (Official Build) (64-bit) so as far as I can tell, it isn't fixed.

To reproduce, I click on the Adblock Plus icon and as I scroll the mouse down the menu, the selected menu item is vertically offset relative to where the mouse is.

Same problem as my original report from April 2017 on Windows 10.0.1713 Build 17134 (64 bit) using

Version 66.0.3359.139 (Offizieller Build) (64-Bit)
Version 66.0.3359.170 (Offizieller Build) (64-Bit)

I don't see any problems with:
Version 68.0.3426.2 (Offizieller Build) canary (64-Bit)

Customers are still seeing this issue on 66 and 67, but latest Canary build (v.68) seems fine.

I confirm, this is fixed in chrome canary 68.0.3437.2.
Triple screen [100%, 175% main, 175%] on Win 10 Pro 1803.

Are there any plans to merge the fix with 67?

Since this is a long standing bug, you may need to wait for M68 stable(last week of July).

Really sorry for the delay.

*** UI Mass Triage ***

Hope this issue is fixed, feel free to reopen it or to file a new issue if needed.